2322779
Description
Quiz by julia.s.mulroone, updated more than 1 year ago
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Created by julia.s.mulroone
almost 10 years ago
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Question 1
Question
Which of these compounds is covalently bonded?
Answer
-
Iron oxide
-
Magnesium sulphate
-
Carbon dioxide
-
Sodium chloride
Question 2
Question
Which are properties of metals?
Answer
-
High melting and boiling points
-
Often gas at room temperature
-
Brittle; easy to break
-
Hard and shiny
-
Dense
-
Sonorous
-
Often highly reactive
-
Poor conductors
-
Good conductors
-
Malleable and ductile
Question 3
Question
Nitrate (NO3) has a valency of 1.
Answer
- True
- False
Question 4
Question
When phenolphthalein comes into contact with an acid, it goes bright pink/purple.
Answer
- True
- False
Question 5
Question
Which of the following increases rate of reaction?
Answer
-
Increasing temperature
-
Adding a catalyst
-
Decreasing concentration
-
Increasing surface area
-
Adding a barbiturate
Question 6
Question
Reactivity increases as you go down the Group 1 metals.
Answer
- True
- False
Question 7
Question
Which of these salts are insoluble?
Answer
-
Potassium nitrate
-
Barium sulphate
-
Silver bromide
-
Sodium carbonate
-
Calcium carbonate
Question 8
Question
Find the chemical equation for:
Hydrogen peroxide -> water + oxygen
Answer
-
H2O2 -> 2H2O + O2
-
H2O2 -> H2O + O
-
2H2O2 -> 2H2O + O2
-
H2O2 -> H2O + O2
Question 9
Question
Why is a polystyrene cup used in the experiment to find a temperature change?
Answer
-
Because it is safer.
-
Because it is an insulator.
-
Because it is cheaper.
-
Because it is light.
Question 10
Question
Which of these are halogens?
Answer
-
Oxygen
-
Potassium
-
Chlorine
-
Fluorine
-
Helium
-
Iodine
-
Copper
-
Bromine
Question 11
Question
Halogens exist as monatomic molecules.
Answer
- True
- False
Question 12
Question
Which of the following compounds are ionically bonded?
Answer
-
Potassium chloride
-
Sulphur dioxide
-
Copper nitrate
-
Magnesium oxide
-
Hydrogen bromide
Question 13
Question
The ∆H for an exothermic reaction is a negative value.
Answer
- True
- False
Question 14
Question
Which of these would you observe in the reaction between sodium and water?
Answer
-
Shoots around surface of the water
-
Hissing sound
-
Burns with a lilac flame
-
Effervescence/fizzing
-
Never disappears
-
Melts into a shiny ball
Question 15
Question
The noble gases are unreactive because they are too large and have very weak electrostatic forces.
Answer
- True
- False
Question 16
Question
What is the test for carbon dioxide?
Answer
-
Burns with a squeaky pop
-
Turns limewater milky
-
Relights a glowing splint
-
Bleaches paper
Question 17
Question
Which gas relights a glowing splint?
Answer
-
Carbon dioxide
-
Ammonia
-
Hydrogen
-
Oxygen
Question 18
Question
In the reaction between potassium chloride and iodine, iodine displaces chloride to form potassium iodide.
Answer
- True
- False
Question 19
Question
Which are properties of the halogens?
Answer
-
Good conductors
-
Highly reactive
-
Alkaline
-
Poisonous
-
Bleaches
-
Metals
-
Form diatomic molecules
-
Painkillers
-
Form coloured gases
Question 20
Question
Why does increasing temperature increase rate of reaction?
Answer
-
Higher quantity of particles, so there are more frequent collisions.
-
More kinetic energy, so particles collide more often and more frequently.
-
Lowers the activation energy required for reactions.
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